Phishing defence and basic account hygiene.
The biggest risk on Nexus is a lookalike address, not the market itself. A stack of small habits keeps you safe.
Copy addresses from a signed source, never type them, and check against the captcha every session, because a saved bookmark can point at an address that has rotated out. If a login ever asks for your recovery phrase, close the tab.
A fresh username, a unique generated password in a local manager, the recovery phrase on paper, short sessions, and small on-market balances. Money on a market is money exposed to whatever happens to the market, so withdraw what you are not about to spend.
Confirming the address on the login screen every session, because it is the only defence against a page that copies the market perfectly. A password used nowhere else, because a leak from an unrelated site is how most accounts are lost. Two factor from the first day. Getting the browser from the project and verifying it. Security level on Safest. In that order, because the first prevents more damage than the rest combined.
Adding a paid tunnel in front of Tor, which changes who can see that you use Tor and introduces a company that knows your name and your connection times. Privacy extensions in Tor Browser, which make you more distinguishable rather than less. Switching addresses constantly, which throws away a working connection for nothing. Clearing history afterwards, which is housekeeping rather than protection.
Searching for an address when the familiar one goes quiet. Copies rank precisely because that is the only moment anybody looks, and everybody looking is anxious and in a hurry. And reusing a username or password, which has nothing to do with Tor and costs more accounts than everything technical put together.
A copied login page at a near miss address. A helpful message carrying a working replacement during an outage. A request to release escrow early. An invitation to continue somewhere off the platform. A request for a recovery phrase or private key, which is never legitimate in any circumstance. They all work by getting you to act quickly outside your normal habits.
That any market is safe. Every marketplace that ever ended was operating normally the day before it did. These habits reduce specific, named ways things go wrong. They do not change what a market is or predict how it finishes, and anybody telling you otherwise is selling something.
Nexus Market